$ git clone -n https://gitee.com/ocs-upgrade/expat.git /var/lib/mock/dist-ocs23-base-build-317929-33458/root/chroot_tmpdir/scmroot/expat
Cloning into '/var/lib/mock/dist-ocs23-base-build-317929-33458/root/chroot_tmpdir/scmroot/expat'...
$ git fetch origin master:KOJI_FETCH_HEAD
From https://gitee.com/ocs-upgrade/expat
 * [new branch]      master     -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b4f53cd Upgrade to version 2.7.1